I have a 76GTS and a 71GTQ 3 bolt, brand new.
The 76 might be a Q.. I have a GTS and a GTQ, I just dont remember which is 4 and which is 3. I can look when Im at the shop.
If youre interested, give me a call on Monday 919-207-0677. Im there from 9:30 to 5:30ish